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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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valid as of

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase 'valid as of' is correct and commonly used in written English.
It is used to indicate that something is true or legal from a particular point in time or from a certain date. For example, "The company policy is valid as of October 1, 2020."

✓ Grammatically correct

Science

News & Media

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

8 human-written examples

Lufthansa took the decision to issues a goodwill policiy valid as of Thursday January 28.

News & Media

Independent

And if you pay by credit card, the donation is valid as of the day the charge is made, not when you actually pay the card.

News & Media

Forbes

Another problem with the new law is that for any power of attorney to be valid as of Sept. 1, it must contain two new boilerplate warnings which are spelled out on the new suggested eight-page power form.

News & Media

Forbes

Humberside Police employs 1,868 police officers, 1,683 police staff, 286 Police Community Support Officers (PCSOs) and 345 special constables (the head count was valid as of 31 July, 2012).

News & Media

BBC

Though there has been controversy over just which animals 'pass' the mirror test — studies with elephants, dolphins, and what versions of the test are valid — as of 2002, Gallup maintained that there was evidence that humans, common chimpanzees, bonobos and orangutans consistently pass the test, and strong evidence that a wide range of other primates fail consistently fail.

Science

SEP

Note: the findings are valid as of June 2004 and do not reflect changes since then.

Formal & Business

Unicef
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Human-verified similar examples from authoritative sources

Similar Expressions

51 human-written examples

Some of the reasons given like lack of specula were valid as many of the medical workers did not work in the department of gynaecology.

Although interestingly, some of the criticisms one could make of the show (if we're going to project it as a microcosm of gay San Francisco) are just as valid as criticisms of the broader community of gay San Francisco.

This amendment shall not be so construed as to affect the election or term of any Senator chosen before it becomes valid as part of the Constitution.

The higher E T ratio measures remain reliable in the sense of being stable, but they are not as valid as measurements of "true" lysing activity.

11 For the purpose of RECOVER, we intend 'usual care' to be externally valid as representative of practice in the NHS (or other healthcare systems).

Science

BMJ Open
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Expert writing Tips

Best practice

When using "valid as of", always specify a precise date or timeframe to avoid ambiguity. For instance, instead of saying "The warranty is valid as of this month", specify "The warranty is valid as of July 1, 2025".

Common error

Avoid using relative time references like "yesterday" or "last week" with "valid as of" as these can become unclear over time. Always use a specific date to ensure clarity and avoid future confusion.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

84%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "valid as of" functions as a prepositional phrase that modifies a noun or noun phrase, specifying the point in time from which something is considered legitimate, correct, or applicable. Ludwig provides numerous examples where "valid as of" is used to anchor the start date of a policy, assessment, or condition.

Expression frequency: Uncommon

Frequent in

Science

38%

News & Media

31%

Formal & Business

25%

Less common in

Encyclopedias

3%

Wiki

3%

Reference

0%

Ludwig's WRAP-UP

In summary, "valid as of" is a prepositional phrase used to indicate the date from which something becomes true or legal. Ludwig AI confirms that this is a grammatically correct and accepted phrase. It's most frequently used in scientific, news, and formal business contexts to provide a precise temporal reference. When using this phrase, it's best to specify a precise date to avoid any ambiguity. While alternatives like "effective from" and "in effect since" exist, the choice depends on the specific context and desired emphasis. This phrase serves to establish a clear temporal boundary and can be useful across various registers, from professional to neutral.

FAQs

How can I use "valid as of" in a sentence?

Use "valid as of" to indicate the date from which something becomes true or legal, such as "This agreement is valid as of January 1, 2026" or "The new policy is valid as of today".

What can I say instead of "valid as of"?

You can use alternatives like "effective from", "in effect since", or "operative as of" depending on the context.

Is it better to use "valid as of" or simply "as of"?

"Valid as of" emphasizes the legitimacy or correctness from a certain date, while "as of" is a more general way to specify a point in time. The best choice depends on the specific context and desired emphasis.

What is the difference between "valid as of" and "effective as of"?

While both phrases indicate a starting point, "valid as of" focuses on legitimacy or correctness from a certain date, while "effective as of" emphasizes when something begins to produce a desired result or consequence.

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Source & Trust

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Authority and reliability

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Expert rating

Real-world application tested

Most frequent sentences: